Note: The job is a remote job and is open to candidates in USA. The client is a fast-growing AI startup building AI-powered products and infrastructure focused on automation, intelligent agents, and modern software engineering. The Senior Backend Engineer will build and maintain scalable backend infrastructure, improve platform reliability, develop integrations, and apply AI-assisted tools to engineering workflows.
Responsibilities
- Design, build and maintain scalable backend services using TypeScript
- Own and improve the platform's data layer and backend runtime
- Design efficient database schemas and optimize application performance
- Build, maintain and improve integrations with multiple third-party APIs
- Create adapter layers that normalize inconsistent external data structures
- Debug complex asynchronous systems, queues and distributed workflows
- Improve observability, monitoring and overall platform reliability
- Collaborate closely with the founders to implement AI-powered workflows and automation across the engineering organization
- Continuously evaluate and adopt new AI development tools that improve engineering productivity
Skills
- Strong professional experience building backend applications with **TypeScript**
- Experience working with **Node.js**
- Production experience with asynchronous job systems, queues, and distributed processing
- Experience designing scalable backend architectures and data models
- Comfortable working within large TypeScript codebases (300k+ LOC or comparable complexity)
- Experience building and maintaining multiple third-party integrations
- Ability to work with inconsistent or undocumented external APIs and create resilient integration layers
- Strong debugging skills across asynchronous systems and production environments
- Understanding of concurrent browser automation and browser fingerprinting concepts
- Familiarity with SQL databases
- Hands-on experience using AI development tools such as **Claude Code, OpenAI Codex, Cursor, or similar**
- Excellent written and spoken English
- Ability to work independently with minimal supervision
- Experience building AI agents or agentic workflows
- Python experience
- Experience with React, Next.js or Svelte
- Experience with ClickHouse or Convex
- Experience working with email infrastructure or marketing technology
- Startup experience
- Product-minded engineering approach
Benefits
- Remote (LATAM)
- Flexible remote work
- Join an AI startup at an exciting stage of growth
- Work directly with technical founders
- Build products using cutting-edge AI technologies
- High ownership and real product impact from day one
- Lean team with minimal bureaucracy
- Opportunity for rapid professional growth as the company scales
Company Overview